Every fingering that fits a hand
x233
easy · no 5
798a
hard
778x
moderate · barre · no 5
7785
hard · no 5
778a
moderate · barre · no 5
What is true of it
D7sus4 is D, G, A and C — 1, 4, 5 and b7 counted from D.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is x233: 3 fingers, held at the 2nd fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
2 of the 5 need a barre.
It leaves out the 5. 4 strings cannot carry 4 notes, and the 5 is the one this chord can lose without changing what it is.
1 string stays silent.
Where its notes are on the neck
The brass dots are D, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
D7sus4/G
0035
D7sus4/A
2035
D7sus4/C
5230
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.
D in other shapes
C7sus4C♯7sus4D♭7sus4D♯7sus4E♭7sus4E7sus4F7sus4F♯7sus4all 374